豆制品废水一级厌氧法的处理工程刘锋

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195200610POLLUTIONCONTROLTECHNOLOGYVol.19,No.5Oct.,2006 , ,,(苏州科技学院环保应用技术研究所,江苏苏州 215011) :,4000m3(UASB)1500m3/d,COD4000~6000mg/L,300~400mg/L,COD95%,。2700~3000m3/d,。:;;;:X792;X703.1   :AAProjectStudyonProductionWastewaterTreatmentofBeanProductsbyOneStepAnaerobicProces(UASB)LIUFeng,XUYuan,WUJian-hua,MASan-jian(InstituteofEnvironmentalProtectionApplicationTechnology,USTS,Suzhou,Jiangsu215011,China)Abstract:BeanproductsaretraditionalfoodsinChina,itsproductioncreatshighconcentrationorganicwastewater.Inthispa-per,theprojectof4000m3onestepanaerobicprocess(UASB)isappliedtotreatthewastewaterwhichquantityis1500m3/d.Theoriginalconcentriationis4000to6000mg/LCOD,CODcanbedecreasedbetween300to400mg/L.Theremovalefficiencycanreachat95%upwards,andmeettherequirementsofthirdclassofdischargestandard.Theoutputofthemethaneisfrom2700to3000m3/d,whichcanbemainlyusedtoheatuptherawwater.Keywords:beanproduce;wastewater;UASB;methane:20060531: (1974—),,,,。 。,、、。,,[1]。50~60t/d。:()※(、、、、)※(1∶3~1∶6)※(6~8)※※※(pH6.5,85℃,0.15~0.3g/L)※、、※※[1]。,,,,2000m3UASB。,。1 、、、,30~50m3/t[2]。,,28m3/t,100%,,1500m3/d。,,。[3],,B/C(0.5~0.6)。,。1。5 .1 COD/(mg·L-1)BOD/(mg·L-1)SS/(mg·L-1)pH/℃、、、4000~60002400~3000400~5005~625~282 2.1 工艺路线、、,,《》(GB8978—1996)。、,。,COD90%,SS400mg/L。,UASB,:,,COD,,,。,HRT2d,30~32℃,2.2~2.5kg/(m3·d),COD95%,。2.2 工艺流程1。1 ,,、、,。,,,,、pH,。,UASB。UASB,UASB。UASB,,。。SS,,UASB,、、、,,,,。,,,,,。3 3.1 预处理(1) ,:0.5m,3mm,GSHZ500。2.5m×0.6m×1.2m。(2) 10min,9.5m3,2m×1.5m×3m,,。,,Q=80m3/h,H=10m,。(3) ,280m3,260m3,3.5m×16m×5m;。。(4) 700m3,655m3,:8m×17.5m×5m,12h。,。,,Q=60m3/h,H=25m,。3.2 UASB反应器UASB,4000m3,3860m3,25m×16m×10m,48h,COD2.5kg/(m3·d),30~37℃。COD95%。2700~3000m3/d。1kgCOD0.1kgSS。,。UASB,。12,400m2。,UASB,。,:0.5m×3m;;。81     193.3 沼气处理与应用,,,[3]。COD0.45~0.5m3/kgCOD,2700~3000m3/d,70%,25.6MJ/m3(7.17×104MJ,2.0×104kW·h、5.8×105t),,。4 4.1 系统处理效率,、、,,。2,2。2  ()()/%CODcr/(mg·L-1)5235.0265.295BOD5/(mg·L-1)2685.453.798SS/(mg·L-1)4508082pH5~66~9/8020702 COD4.2 UASB启动与运行UASB,UASBpH、(VFA)CODcr,,[4]。(1) 3000m3,(75%)600t,,COD,COD,。pH、COD3、4。3 pH4 COD(2) ,2.5mTSS100g/L(VSS/MLVSS70g/L),,,:1.5mm。、COD5。5 CODCOD6。6 COD7。825 .7 5 5.1 运行费用:(1):1、2,0.3/t;(2):(),0.07/t,0.37/t;(3):。,。5.2 效益UASB,,。,,。6  (1)UASB,,,,;(2),,CODcr(95%);(3),,,;(4)(),;(5),,;(6)UASB,,。[][1] ,.[M].:,2001.[2] , ,.(I)[J].,1999,6(2):17.[3] ,,.[J].,1998(9):31.[4] , ,.UASB-TF[J].,2001,12(2):54.(上接第79页)  ,,MIC,。5.2 好氧运行分析,。,,,,,。,CODcr100mg/L,。7。7 CODcr6  (1),,。(2)MICHRT24h,CODcr85%,CODcr100mg/L。(3)MIC、,。[][1] .(MIC)[J].,2002,20(4):24-27.[2] .[M].:,2002.134-135,213-214.[3] .[J].,1999,17(2):3-6.83

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